Process of manufacturing clamping-rings for pipe-couplings.



'GEGRGE WHITE, OF 0i' lVlANUFAZXU'RL :IG COMPANY, PENNSYLVANA. i

PRGCESS OF MANUFCTURNG CL To all 'whom it may concern:

Be it known that I, (intieme lil. TiTniTf-it citizen of the United States, residing ul, Uil

' City, in the county of /ennngo :intl Stute of lennsyl vuniti, here invented eet-tain new unil useful improvements in lli-ooe of li'lunuip'aeturing Clamping-lnge tot' liperying;- out my process. Fig'. 9; is n section o't n. ring formed by bending ti piece ot' the mill skelp into ring forni und uniting; the ends ol the saine by welding. Figs. 2l :intl l show the ring illustrated in Fig. i2, in connection with one forni oi uppurutus for bending one end of the ring' wall outwardly into u position substantially perpendicular to the zitti oic the ring, the rink; nml holdingI tlie being shown in section. Fig. 5 showt-i in section the tinishetl ring'. Fig. t3 in :i section-.il View of :i slight modification ol1 the ring.

The object of niy invention a process for the nminifuelure ot clamping rings for pipe couplings, troni wrought; metal, suoli :is steel or 'wrought iron. whereby the. suine muy be ninnul'tiotm'etl eonnnereiully, in large quantities, expeditiously :mtl at such moderate expense @is to ennlile thezu to replace in the trede rings of this eli-rector heretofore made lronreust or malleable cust iron.

ln Carrying out this invention l tiret prepare o, skelp or blank, as illustrated in l'iig. l, which comprises a let plete-1, which is provi/led on one 'aee with a longitudinally disposed proiet-.ting rilo 2, located :it n (listgince from one edge of the plaie portion equal to the depth oit the paeliingi e flesiretl in the finishetl ring, as inilietiteil :it 2":

represente` u section of the Slielp which l, employ in ear to provide of Lettere .Patent l l l The Sltelp il; ine'lerfiliif. Hulneient tor :i nun llel'jp in vuly ot?" o1 n it honi into rino; l'

ted. the flizuneer Milan J nl' lne rili will jii'mi :lininei pim n lientlin j Y Y tu uml lie il: L 'nier or dies, or triez'illy., z alionltl lie tailten that tion the eotitinuil-x ot errent l. lintl p of mi@ Ail ol: the blz.

minutes:

mit anvil or ne '-3 my torn'ier luent l. t 3.3., i90? the peg; in thisl in. 5- neu ielly eonfztru al lo n t, torni anti mi m" the riti i? nntlflie lefeml moes: of SU 'the piuttporie'in lV of the nl. t f tl s tur 'tmuietlz 'will lio ol" ei. .lliiilrit'ul i es, intlit'ulefl in Vig. with the ril: inviertinglj inu'urtllli troni ile inner linee. 'l At step in my prow een' if in hen-.iz La lie 85a longer portion oi ine ri L will, on one Sifle oi" the rilv Q antiwar/ily i'mn it is in u poi 'tionsubstantiel? peper eulzn: to the e. oi" the ri l". Thin4 step muet, he pei-'tor in Sui/li :i n s to umitl teeming or rs l'; 9G

the ineinl, wliieh olnioueiy moet he puntletl considerably more :it treinities thun it is :itlimtent provision inust be nlutle for preyentuigl any distortion nl: the inherent7 ot' the oylirulrimil *J5 rin"l tui-ing; this Step. the tiren ing 'l have shown one torni unfirzi'tius forming; one entl olf the i"A into minsten tizilly peipeiulf lar tizi con ists of u hohli Aj ille fl. mutable toi' reve-ivi tion o'lV the ring if .llioti ot' un internal 30 movementA with respect shape, and of such a height as to have its top face nearly in line with the lateral face in -a'slightly hig rollers 5,

of the rib 2,.A nearest to the line of bend to be made. The ring preferably in a highly heated condition, is placed in the holding or retaining die 3, andthe exposed part of the ring is operated upon from the inside outJ Wardly by a roller 4, or rollers 4, 4. The roller 4, or rollers 4, 4 is or are preferably carried in supporting means, capable Aoit movement outwardly and downwardly with respect to the die 3, and I prefer to provide for a relative rotary movement of the die and rollers, with respect to each other, either by supporting the dieon a rotary bed, to which motion is imparted or by .supporting the roller, or rollers in a rotary part, as preferred. The effect of the operation oi the parts just described, is to bendthe entire ring wall above the` rib 3, outwardly,as shown in Fig. 3 at lt.V

In order to flatten the outwardly bent portions l'1 into position shown in Fig. 4 substantially perpendicular to the axis of the ring, I may use the same retaining die 37 or-another similar die having its top face her plane, and a roller or 5 having their axes substantially perpendicular to the axis of the ring as shown in Fig. 4, and capable of vertical to the die. I also prefer to provide means for establishing Y A bolt holes 1d annular flange member, cylindrical body ,portion and having an inwardly 60.'

"the rib 2, see Figs. 4 and {prefer-ably the ribI2, opposite the'plate relative rotary movement between the flat tening roll or rollers,y and the retaining die. The effect of 'the operation of the .parts shown in Fig. 4 is to roll down the end portion of the ring into a position substantially perpendicular `to the axis of the ring, thus forming an, outwardly projecting annular flange la, the lower face of which is in substantial alinement with the upper face of 5. 4In other words the outer flange la is stepped with respect to .the rib 2, to afford the requisite metal for the bend, at 1b without distorting the rib,

vand thus produces a shallow recess l on the outer side of the rib. f The ring is completed by providing the projecting flange la with at suitable intervals around thel same, which may be formed by punching by cold punching) or inany i. Lher suitable manner. The rin g thus formed provides a plate member (represented by the flange portion la) disposed substantially perpendicularly to the axis of the rin an represented by the l of the ring, exthe plate member, projecting annular flange (represented by the rib 2) which is out of alinement with the plate member, and forminga packing recess 2a on the side of member. y v yI VVdonot limit myself to. the use of the apparatus herein described inv carrying out tending from one face of my process, as I may employ other means than those referred to for carrying out the 'steps thereof. It will be seen that the wrought metal ring produced by this process, possesses great strength to resist distortion under the stress of the clamping bolts ld as the offset or stepped relation of the plate member la with respect to the bead 2, forming the packing recess provides a larger body ot' metal to resist the resulting strain produced on the ring by the tensionv of the bolts, and the resistance sustained by the 'rib 2 of the packing recess.

It is to be understood that I may provide means for standardizing and truing the portion. of the ring which comes nearest the pipe, towit, the inner face of the rib 2, and the annular flange portionl. I prefer to perform this step of standardizing and truing before the 'bending of the end portion of the ring perpendicular to the axis thereof, and to retain the lower end of the same which forms the packing recess, in its true form during the format-ion of the plate member la. I may, however, perform this step after the formation of the plate member l" and at the same time, or before or after the bolt holes are made, as may be' found most convenient. formed by means of suitable dies, or by a holding die and an expanding mandrel engaging the lower end of the ring wall, and the rib portion t2 thereof, as will be readily understood, without particularly illustrating this step. In some instances I further treat 'the ring by bending the outer marginal portions of the plate member la ternal reinforcing flange l, as clearly shown in Fig. 6. This external flange will strengthen and reinforce the plate member l of the ring, and render 'the whole ring stiffer to resist the tension of the bolts.

The ring per se as an article of manufacture is not specifically claimed herein as it forms the subject matter of a divisional application filed by me on the 2nd day of November 1910, Serial No. 590,397..

What I claim and desire to secure by Letters Patent is The herein described a clamping ring for vided with an annular nular i'iange projecting from one face there- I of and an inwardly extending annular flange forming therewith an annular packing recess., which consists in forming a blank comprising a Hat plate, having a longitudinal rib projecting from one face, of suiiicient thickness and depth to form the base of the packing recess, distance from one edge of the plate equal to the depth of the desired packing recess, and

process of forming pipe couplings, proplate member, an. an-

plate memcircle with This step is perl! to form an eX-l said rib being located at a the rib inside and welding the ends together, to secure continuity oit the pleite and of the rib, :intl bending tlxe plate member portion of the ringso :formed bodily outward into :i plane substantially perpendicular to the exis of the ring, imparting to the other end portion of the ring and to the inner edge of the rib time eirenlsir Aform of predetermined internal diameters, und forming bolt holes in the outwardly bent plate member portion. 10 In testimony whereof I aix my signature, in the presence of two witnesses.

GEORGE HENRY VHITE. Witnesses:

BERNARD FLANNIGAN, CHAS. R. BAKER. 

